/Engine/Source/Runtime/CoreUObject/Public/Misc/PackagePath.h
The path is in the standard UnrealEngine form - it is as a relative path from the process binary directory Extension is set based on the given segment If the LocalPath for this PackagePath is unknown, nothing is written to the Builder Appending is possible only for MountedPath and LocalOnly internal types. Will attempt to mount before returning with no action
void AppendLocalFullPath ( FStringBuilderBase & Builder ) const